New upper bounds are established for the spectral radius and low energy of the A_alpha-matrix of digraphs, with equality characterizations and numerical evidence of sharpness over existing bounds.
Gutman, The energy of a graph, Ber
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New Bounds for the Spectral Radius and Low Energy of the $A_\alpha$-Matrix of Digraphs
New upper bounds are established for the spectral radius and low energy of the A_alpha-matrix of digraphs, with equality characterizations and numerical evidence of sharpness over existing bounds.
- On the Extremal Energy of Complex Unit Gain Dumbbell Graphs